Lots of interesting info in this article if you have time.

Expecting Defeat In Supreme Court, Public Sector Unions Try to Slow Exodus of Members

" ..... Public sector unions are the main source of support for Democratic Party candidates and liberal policies. Campaign finance is much-debated, but in my opinion there is only one real campaign finance scandal: the fact that unions are able to use the force of law take money from people unwillingly, and spend it on politics, in ways of which many members disapprove. If the Supreme Court rules in favor of Mark Janus, that corrupt practice will finally come to an end. It could be the most significant development in American politics in a very long time. ...."

http://www.powerlineblog.com/archives/2017/08/expecting-defeat-in-supreme-court-public-sector-unions-try-to-slow-exodus-of-members.php